Visible light promoted synthesis of allenes
Catalysis Science & Technology,
Год журнала:
2024,
Номер
14(18), С. 5143 - 5160
Опубликована: Янв. 1, 2024
This
review
article
summarizes
the
visible
light
mediated
synthesis
of
allenes
from
substrates
like
1,3-enynes,
propargylic
carbonates,
homopropargylic
alcohols,
oxalates,
alkynyl
diazo
compounds,
and
terminal
aziridines.
Язык: Английский
Metallaphotoredox Synthesis of Axially Chiral Tetrasubstituted Allenes through Regio- and Enantioselective 1,4-Carbocyanation of 1,3-Enynes
Keyi Peng,
Ya-Sheng Cao,
Quanyuan Wang
и другие.
ACS Catalysis,
Год журнала:
2024,
Номер
14(18), С. 14048 - 14057
Опубликована: Сен. 10, 2024
Язык: Английский
Nickel-Catalyzed Reductive 1,4-Alkylacylation of 1,3-Enynes Enabling Synthesis of Allenyl Ketones
Quanyuan Wang,
Keyi Peng,
Xupei Yao
и другие.
Organic Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 21, 2025
A
nickel-catalyzed
reductive
1,4-alkylacylation
of
1,3-enynes
has
been
established
using
nonactivated
tertiary
alkyl
bromides
and
aromatic
anhydrides
as
dual
electrophiles.
This
protocol
enables
efficient
assembly
tetrasubstituted
allenyl
ketones
with
high
chemo-
regioselectivity.
Mechanistic
insights
reveal
the
radical
relay
process
involving
synergistic
interactions
nickel
zinc.
The
ketone
products
serve
modular
building
blocks,
particularly
for
constructing
fully
carbon-substituted
furans
via
Au-catalyzed
cycloisomerization
selective
1,2-aryl
migration,
enhancing
synthetic
practicality.
Язык: Английский
Nickel-catalyzed regiodivergent sulfonylarylation of 1,3-enynes to access allenes and dienes
Chemical Science,
Год журнала:
2024,
Номер
15(33), С. 13271 - 13278
Опубликована: Янв. 1, 2024
The
radical-mediated
difunctionalization
of
1,3-enynes
facilitates
rapid
access
to
structurally
diverse
allenes
and
dienes.
Язык: Английский
Ball-Milling-Enabled Nickel-Catalyzed Reductive 1,4-Alkylarylation of 1,3-Enynes under an Air Atmosphere
Organic Letters,
Год журнала:
2024,
Номер
26(36), С. 7688 - 7694
Опубликована: Авг. 29, 2024
A
ball-mill-enabled
nickel-catalyzed
1,4-alkylarylation
of
1,3-enynes
with
organic
bromides
has
been
developed,
offering
a
versatile
method
for
assembling
tetrasubstituted
allenes.
This
approach,
the
first
ball-milling-based
remote
radical
coupling,
overcomes
limitations
traditional
solution-phase
methods,
such
as
need
air-
and
moisture-sensitive
reagents,
use
bulk
solvents,
prolonged
reaction
times.
Given
outstanding
performance
reduction
coupling
reactions,
we
anticipate
further
advancements
in
sustainable
efficient
synthetic
methodologies.
Язык: Английский
Photoreductive 1,4-Dicarbofunctionalization of 1,3-Enynes with Organoiodides and Cyanoarenes via Halogen-Atom Transfer
Liangfeng Yang,
Liang Zeng,
Yilin Liu
и другие.
Organic Letters,
Год журнала:
2024,
Номер
26(36), С. 7661 - 7666
Опубликована: Авг. 28, 2024
A
photoreductive
halogen-atom
transfer
(XAT)
strategy
for
1,4-dicarbofunctionalization
of
1,3-enynes
with
organoiodides
and
cyanoarenes
is
disclosed,
enabling
access
to
functionalized
allenes
in
a
highly
regio-,
chemo-,
stereoselective
manner.
Upon
the
photoredox
catalysis
activation
Et
Язык: Английский
Palladium-catalyzed four-component domino sulfonylation and carbonylation of 1,3-enynes at room temperature
Organic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(20), С. 5851 - 5858
Опубликована: Янв. 1, 2024
A
novel
palladium-catalyzed
four-component
domino
sulfonylation
and
carbonylation
of
1,3-enynes
has
been
developed,
which
enables
the
rapid
incorporation
allene,
sulfone,
carbonyl
amine
units
into
one
single
molecule
simultaneously.
Язык: Английский
Dual Photoredox/Copper-Catalyzed Three-Component Alkylcyanation of Alkenes and 1,4-Alkylcyanation of 1,3-Enynes Employing Sulfoxonium Ylides as the Carbon Radical Precursors
Organic Letters,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 3, 2024
A
novel
dual
photoredox/copper-catalyzed
three-component
alkylcyanation
of
alkenes
and
1,4-alkylcyanation
1,3-enynes
have
been
developed.
In
this
radical
cyanoalkylation
reaction,
the
photoredox
induced
alkyl
from
sulfoxonium
ylides
adds
to
carbon-carbon
double
bonds
styrenes
or
1,3-enynes,
generated
benzylic
allenyl
radicals
couple
with
a
Cu(II)
cyanide
complex
achieve
selective
cyanation.
The
reaction
exhibits
high
chemo-
regioselectivity
wide
substrate
scope,
providing
an
efficient
method
for
synthesis
nitriles
in
single
step.
Язык: Английский